Vacuum-tube.



N0 771,700. PATENTED 00T. 4, 1904. H. BOEHM & F. H. WAPPLER.

VACUUM TUBE.

APPLICATION FILED JUNE 24,1904.

N0 MODEL.'

UNTTED STATES Patented October 4, 19011.

PATENT OFFICE.

HERMAN BOEl-IM AND FREDERICK H. IVAPPLER, OF NEW YORK, N. Y., ASSIGNORS,BY DIRECT AND MESNE ASSIGNMENTS, TO SAID IVAPPLER AND AMERICAN X-LIGHTMANUFACTURING COMPANY, OF NEWT YORK, lN. Y., A CORPORATION OF NEWV YORK.

VACUUM-TUBE.

SPECIFICATION forming-part of Letters Patent No. I771,700, dated October4, 1904.

i Application filed June 24, 1904. l Serial No. 213,924. (No model.)

To @ZZ whom it may concern.'

Be it known that we, HERMAN BOEHM and FREDERICK H. VAPPLER, citizens ofthe United States, residing in the borough of Manhattan, in the city,county, andState of New York, have invented an Improvement inVacuum-Tubes, of which the following is a speci- Y coacting, connecting,and supporting devices.

Our present improvement, like the device of said patent, is avacuum-electrode, of vitreous material, employed in electrotherapeuticsfor 2o effecting electrical asepsis and stimulation by Y passing'high-tension currents through .said electrode, and thereby decomposingthe air surrounding the same into ozone, which in proximity to thediseased surface quickly oXidizes all toxic matter present therein.

In carrying out our invention the sealed end of the vacuum-'electrode isof reduced area from the major portion of the electrodetube, and in aportion of intermediate diameter there is a screw-thread pressed intothe glass or vitreous material. The tubular handle is to be of anysuitable insulating material--such, for instance, as hardrubber-hav# ingan interiorly-threaded tubular metal end,

preferably of slightly larger diameter than the main portion and intowhich the threaded .portion of the vacuum-electrode screws with thereduced end farther Within the tubular handle. This handle is adaptedfor interchangeable vacuum-electrodesMthat is, vacuum-electrodes wherethe bulb or free ends are of different shapes, according to the use towhich the vacuum-electrodes are to be put. A unipolar terminal is sealedin the vacuumelectrode close to the threaded portion, and

the part thereof that projects is in the surface glass and contacts withthetubular metal end. An adjacent terminal support is secured tothe saidtubular metal end.

In the drawings, Figure 1 is an elevation 5o representing ourimprovement. Fig. 2 is a longitudinal section andpartial elevation ofthe same, and Fig. 3 is a cross-section and partial elevation at a' ofFig. 2.

The electrode comprises two essential parts-a part of vitreous materialcontaining a vacuum, and a handle. The part of vitreous material comprises a tube a, of'glass, a bulb end d, blown to the desired form orshape.l according to the disease to be treated. The 6o same alsoincludes a reduced threaded portion c2 and a further reducedparalled-sided part as and sealed end a4. The threaded part a2 ispressed into the glass,vand between the same in its diameter and thetube of glass c there is a tapering portion, and between the threadedportion a2 and the further reduced parallel-sided portion a" there isalso a tapering portion, and 2 represents a sealed-in unipolar terminal.The wire forming this terminal 7o projects within the vacuum-tube andalso eX- tends outside, where the same is bent over and partiallyembedded in the surface glass.

L represents a handle, of suitable insulating' material, preferably hardrubber, although we do not limit ourselves in this respect, as anysuitable insulating material may be employed. We have shown the handlein the drawings as broken off at one end, because the same may be of anydesired length. One 8O vend of this insulating-material handle b ispreferably slightly enlarged, as shown in the drawings, and placedtherein is an interiorlythreaded tubular metal end the outer surface ofwhich at one end is preferably of the 8 5 diameter of the enlargedportion of the tubular handle,'eXtends beyond the insulating' materialof the handle, and is provided with a circumferential groove.

The interior diameter of the interiorly-,QOy

threaded tubular metal end is slightly in excess of the interiordiameter of the main tubular handle, the threaded portion agreeing withthe threaded portion a2 of the part of vitreous material. Theparallel-sided part of vitreous material a3 is of slightly less diameterthan the interior diameter of the tubular handle. Consequently when thepart of vitreous material is brought into relation with the handle thepart a3 is freely received into the tubular handle and the threaded.portion engages the threaded portion oi' the tubular metal end 2;', theparts screwing together, so that the inclined portions at the respectiveends or' the threaded portion engage conforming inclined portions at theouter end of the tubular metal end b and at its inner end, the sealed-inunipolar terminal 2 at the same time forming metallic and electriccontact metal to metal with the end of the tubular metal end b. Theparts are thus connected quite iirmly and rigidly for the uses to whichthe electrode is to be put and so firmly as to prevent accidentalseparation.

In the groove surrounding the end of the tubular metal end b' is a wirering c' and adjustable terminal support c, the terminal support beingadapted to receive one end of a lead-wire or electric conductor. Thisadjustable terminal and the wire ring connected therewith may be turnedaround upon the tubular metal end b to be brought into any desiredposition where the same will be most out of the way of the operator.

We do not herein limit ourselves to the employment of aninteriorly-threaded tubular metal end b nor to the screw-threadedportion a2 pressed into the tube of vitreous material, as any well-knownmeans or' removably connecting these parts so as to prevent accidentalseparation may be employed instead of the precise manner shown.

1n the present case, as in the former patent, the high-tension currentsthat are necessary to operate the vacuum-electrode may be produced inany desired manner, and they are in the present case produced insubstantially the same manner as is described in the aforesaid patent,in connection with which a Ruhmkorill coil may be employed, one terminalor' the secondary being connected electrically to a plate upon which thepatient to be treated is placed and the other terminals of the secondaryinsulated. The current is then complete from the plate upon which thepatient is placed by the patient, the vacuum-electrode, and to theinsulated terminal of the secondary through the air, and in treating thepatient the operator grasps the handle and employing thevitreous-material electrode with the desired form of end moves the sameover the diseased parts and is not hampered by wires or electricalconnections.

We claim as our invention- 1. An electrode for therapeutic purposes,comprising a part of vitreous material containing' a vacuum with one endreduced in diameter, a handle of insulating material adapted to receivesaid reduced end, and means for connecting the parts to preventaccidental separation.

2. An electrode for therapeutic purposes,

comprising a part. of vitreous material containing a vacuum with one endreduced in diameter, a sealed-in unipolar terminal adjacent to this end,a handle of insulating material having a tubular metal end receivedwithin one end of the handle, and said parts adapted to receive thereduced end of the electrode or' vitreous material, and means forconnecting the parts to prevent accidental separation.

3. An electrode for therapeutic purposes, comprising apart of vitreousmaterial containing a vacuum with one end reduced in diameter, asealed-in unipolar terminal adjacent to this end, a'handle of insulatingmaterialA having a tubular metal end received within one end of thehandle and said parts adapted to receive the reduced end of theelectrode of vitreous material, means for connecting the parts toprevent accidental separation, and means for connecting one end of alead wire to the tubular metal end.

4. An electrode for therapeutic purposes, comprising a part of vitreousmaterial containing a vacuum with one end reduced in diameter and sealedand with an adjacent part of intermediate diameter having a screwthreadpressed therein, a handle of insulating material having in one end aninteriorlythreaded tubular metal end, said parts adapted to receive thereduced end of the part of vitreous material so that the screw-threadsinterlock and the reduced end passes farther within the handle to holdthe parts in their connected relation and prevent accidental separation.

5. An electrode for therapeutic purposes, comprising a part of vitreousmaterial containing a vacuum with one end reduced in diameter and sealedand with an adjacent part of intermediate diameter having a screwthreadpressed therein, a sealed-in unipolar terminal, a handle of insulatingmaterial having in one end an interiorly-threaded tubular metal end,said parts adapted to receive the reduced end of the part of vitreousmaterial so that the screw-threads interlock and the reduced end passesfarther within the handle `to hold the parts in their connected relationand prevent accidental separation, said unipolar terminal makingmetallic and electrical contact with the inner surface of the tubularmetal end when the parts are connected. l

6. An electrode for therapeutic purposes, comprising a part of vitreousmaterial containing a vacuum with one end reduced in diameter and sealedand with an adjacent part of intermediate diameter having a screwthreadpressed therein, a sealed-in unipolar terminal, a handle of insulatingmaterial having in one end an interiorly-threaded tubular IOO IIO

ISO

metal end, said parts adapted to receive the Areduced end of the part ofvitreous material so that the screwthreads interlock and the reduced endpasses farther Within the handle to hold the parts in their connectedrelation and prevent'accidental separation, said unipolar terminalmaking metallic and electrical contact With the inner surface of thetubular metal end When the parts are connected, and

a movable device connected to the tubular.

reduced end of the part of vitreous material so thatthe screw-threadsinterlock and the reduced end passes Afarther Within the handle to holdthe parts in their connected relation and prevent accidental separation,said unipolar Vterminal making metallic and electrical contact with theinner surface of the tubular metal end when the parts are connected, anda Wire ring surrounding the exposed portion of the tubular metal end inan exterior groove thereof, and a terminal support connected to one endof the Wire ring and adapted to receive one end oi' a lead-Wire,substantially as set forth.

35 Signed 'by us this 18th day of June, 1904.

HERMAN BOEHM. FREDERICK H. VVAPPLER.

Witnesses:

GEO. T. PINCKNEY, S. T. HAVILAND. l

